CN104121940B - A kind of for combustion gas survey meter stable explosion-proof casing - Google Patents
A kind of for combustion gas survey meter stable explosion-proof casing Download PDFInfo
- Publication number
- CN104121940B CN104121940B CN201410363686.0A CN201410363686A CN104121940B CN 104121940 B CN104121940 B CN 104121940B CN 201410363686 A CN201410363686 A CN 201410363686A CN 104121940 B CN104121940 B CN 104121940B
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- Prior art keywords
- valve
- seal casinghousing
- motor
- protective cover
- rubber blanket
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- 239000000567 combustion gas Substances 0.000 title claims abstract description 12
- 238000009423 ventilation Methods 0.000 claims abstract description 29
- 230000001681 protective effect Effects 0.000 claims abstract description 23
- 239000011222 crystalline ceramic Substances 0.000 claims abstract description 4
- 229910002106 crystalline ceramic Inorganic materials 0.000 claims abstract description 4
- 238000007789 sealing Methods 0.000 abstract description 9
- 230000009286 beneficial effect Effects 0.000 abstract description 2
- 238000010030 laminating Methods 0.000 abstract description 2
- 239000007789 gas Substances 0.000 description 23
- BASFCYQUMIYNBI-UHFFFAOYSA-N platinum Chemical compound [Pt] BASFCYQUMIYNBI-UHFFFAOYSA-N 0.000 description 8
- 239000000523 sample Substances 0.000 description 6
- 229910052697 platinum Inorganic materials 0.000 description 4
- 230000001953 sensory effect Effects 0.000 description 4
- 230000032683 aging Effects 0.000 description 2
- 230000003197 catalytic effect Effects 0.000 description 2
- 238000002485 combustion reaction Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000002737 fuel gas Substances 0.000 description 2
- 238000005299 abrasion Methods 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000010891 electric arc Methods 0.000 description 1
- 238000010892 electric spark Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 239000003870 refractory metal Substances 0.000 description 1
- 239000004065 semiconductor Substances 0.000 description 1
- 230000035945 sensitivity Effects 0.000 description 1
- 230000001052 transient effect Effects 0.000 description 1
Landscapes
- Portable Nailing Machines And Staplers (AREA)
- Electrically Driven Valve-Operating Means (AREA)
- Safety Valves (AREA)
Abstract
The invention discloses a kind of for combustion gas survey meter stable explosion-proof casing, including a seal casinghousing (1), described seal casinghousing (1) uses crystalline ceramics to make, ventilation mouth (101) it is provided with on described seal casinghousing (1), ventilation mouth (101) place is provided with a valve (4), a protective cover (3) it is provided with on the inwall of described seal casinghousing (1), it is provided with a spring (5) between afterbody and the protective cover (3) of motor (2), described ventilation mouth (101) is fixed with a rubber blanket (102) near seal casinghousing (1) one end outward.Beneficial effects of the present invention: this device arranges a rubber blanket outside ventilation mouth, when needing ventilation, air is in the passage of rubber blanket, mouth of taking a breath, air channel, protective cover are carried out such as seal casinghousing；And when needing to seal, valve laminating rubber blanket, coordinate and passage, air channel are all closed, it is ensured that sealing.
Description
Technical field
The invention belongs to detector field, especially relate to a kind of for combustion gas survey meter stable explosion-proof casing.
Background technology
Gas detector, combustible gas probe, it is to the single or detector of many combustible gases concentration-response, and it is generally divided into catalytic type combustible gas probe and quasiconductor combustible gas probe.
Catalytic type combustible gas probe is that the resistance variations after utilizing the heating of refractory metal platinum filament is to measure combustable gas concentration, when fuel gas enters detector, oxidation reaction (flameless combustion) is caused on platinum filament surface, its heat produced makes the temperature of platinum filament raise, and the resistivity of platinum filament just changes；The gas sensory element that quasiconductor combustible gas probe sensitivity is higher, it in working order time, run into fuel gas, semiconductor resistor declines, and drop-out value and combustable gas concentration have corresponding relation.
In quasiconductor combustible gas probe, after gas sensory element senses to imflammable gas, resistance declines, the measurement of resistance value is then completed by circuit, it is usually the electronic device that one resistance of series connection is constant, the respectively terminal voltage on two devices of test, because electric current is equal, it is easy to calculate the resistance of quasiconductor, processor, according to transient resistance, calculates combustable gas concentration value, and shows over the display, allow staff check, be sometimes also provided with buzzer and report to the police.
The housing of existing gas detector is all adopted made of plastic, when staff carries detector inspection, or when being fixed on the easy leak point of combustion gas, damage if there is electrical appliance wires, produce electric spark or electric arc, likely combustible gas is lighted, not only burn out gas detector, also can hurt staff, or the electric equipment of periphery, blast tube, causes great accident.The gas detector of existing employing ceramic shell, arranges a passage, and right later thread plug carries out instantaneous blocking; prevent internal-combustion from having influence on outside, protect staff, but thread seal performance is the highest; having potential safety hazard, also screw thread is plugged with water-proof function, so when putting into warehouse; thread plug plug can be dropped rise; after having used for a long time, easily cause abrasion, lose sealing; this product thread plug is changed and is the most very bothered, and i.e. result in unusable.
Summary of the invention
The purpose of the present invention is i.e. to overcome the deficiency of present technology, there is provided a kind of for combustion gas survey meter stable explosion-proof casing, solve in the gas detector of existing pottery, the sealing property of thread plug is not very good, and used long afterwards, sealing property also can decline, and causes the security performance of device to reduce, and affects the problem that device uses.
nullThe present invention is achieved through the following technical solutions: a kind of for combustion gas survey meter stable explosion-proof casing，Including a seal casinghousing，Described seal casinghousing uses crystalline ceramics to make，A ventilation mouth it is provided with on described seal casinghousing，It is provided with a valve at ventilation mouth，Valve is also made for pottery，Valve is cylindrical，Valve coordinates with ventilation mouth size，And both are threaded，Valve is rotated by the driven by motor within seal casinghousing，At least one air inlet duct it is provided with on the sidewall of valve，Described air inlet duct bearing of trend is axial consistent with valve，And air inlet duct extends to the other end away from one end of motor from valve，The length of air inlet duct is less than the length of valve，Controlling on the spark detector that end is connected in seal casinghousing of motor，A protective cover it is provided with on the inwall of described seal casinghousing，Motor is positioned at protective cover，The perisporium of protective cover is empty shape in thread，A spring it is provided with between afterbody and the protective cover of motor，Valve、Motor、The center line of spring three overlaps，Described ventilation mouth one end outside seal casinghousing is fixed with a rubber blanket，The center of rubber blanket is provided with a passage，Air inlet duct to the distance of valve centrage more than the radius of passage.Valve usually rotates to air inlet duct and can get at inside seal casinghousing, at this moment air inlet duct will connect inside and outside seal casinghousing, gas sensory within seal casinghousing i.e. may detect the gas station of outside, when the electronic machine in seal casinghousing occurs aging, after energising produces spark, internal combustion gas can be burnt, spark detector can sense spark, motor work can be controlled at once, valve is rotated by motor, so that valve turn outside seal casinghousing, in air inlet duct reaches seal casinghousing, seal casinghousing is i.e. sealed.Burning in seal casinghousing does not interferes with outside, does not have great accident and occurs, protects staff.Because pottery thread seal performance is not fine, so this device arranges a rubber blanket outside ventilation mouth, if rubber blanket not perforate, ventilation mouth is the most blocked, and the rubber blanket central part of this device offers a passage, valve rotates after being urged to rubber blanket, is blocked by passage, and the air inlet duct on valve is also blocked by rubber blanket, because the radius of passage is less than the distance of air inlet duct to valve center line.After i.e. rubber blanket is fitted with valve, the position not connected between air inlet duct with passage, the most i.e. accomplish the sealing of seal casinghousing；And when needing ventilation, valve is away from rubber blanket, i.e. air enters in seal casinghousing through passage, ventilation mouth, air channel, protective cover successively, defines ventilation.Arranging a protective cover is then to protect motor and valve, prevents and internal components bumps against, and arrange spring, then be largely ensure that valve presses close to rubber blanket after, do not have the phenomenon of vibrations reversion, further ensure sealing.
Further, above-mentioned seal casinghousing is provided with a handle, facilitates staff to carry this device.
Further, above-mentioned valve is provided with a cross recess on the end face outside seal casinghousing, and valve, by changing cutter, can be rotated by staff, can close valve at ordinary times, is usually overcast and rainy, prevents internal electronics from making moist.
The invention has the beneficial effects as follows:
(1) this device arranges a rubber blanket outside ventilation mouth, and when needing ventilation, air is in the passage of rubber blanket, mouth of taking a breath, air channel, protective cover are carried out such as seal casinghousing；And when needing to seal, valve laminating rubber blanket, coordinate and passage, air channel are all closed, it is ensured that sealing；
(2) protective cover is set, it is therefore prevented that motor is equal to the miscellaneous part collision in seal casinghousing, the use of response device；
(3) spring is set, it is therefore prevented that valve is shaken reversion, thus breakseal.
Accompanying drawing explanation
Fig. 1 is seal casinghousing outer end schematic diagram；
Fig. 2 is the broken away view of valve, motor, protective cover；
Fig. 3 is sectional view during valve opening；
Fig. 4 is sectional view during valve closing；
In figure, 1-seal casinghousing, 2-motor, 3 protective covers, 4-valve, 5-spring, 6-handle, 101-takes a breath mouth, 102-rubber blanket, 103-passage, 401-air inlet duct.
Detailed description of the invention
Below in conjunction with embodiment, the present invention is described in further detail, but the structure of the present invention is not limited only to following example:
[embodiment]
nullAs Figure 1-4，A kind of for combustion gas survey meter stable explosion-proof casing，Including a seal casinghousing 1，Including a seal casinghousing 1，Described seal casinghousing 1 uses crystalline ceramics to make，A ventilation mouth 101 it is provided with on described seal casinghousing 1，It is provided with a valve 4 at ventilation mouth 101，Valve 4 is also made for pottery，Valve 4 is cylindrical，Valve 4 coordinates with ventilation mouth 101 size，And both are threaded，Valve 4 is rotated by the motor 2 within seal casinghousing 1，At least one air inlet duct 401 it is provided with on the sidewall of valve 4，Described air inlet duct 401 bearing of trend is axial consistent with valve 4，And air inlet duct 401 extends to the other end away from one end of motor 2 from valve 4，The length of air inlet duct 401 is less than the length of valve 4，Controlling on the spark detector that end is connected in seal casinghousing 1 of motor 2，A protective cover 3 it is provided with on the inwall of described seal casinghousing 1，Motor 2 is positioned at protective cover 3，The perisporium of protective cover 3 is empty shape in thread，It is provided with a spring 5 between afterbody and the protective cover 3 of motor 2，Valve 4、Motor 2、The center line of spring 5 three overlaps，Described ventilation mouth 101 one end outside seal casinghousing 1 is fixed with a rubber blanket 102，The center of rubber blanket 102 is provided with a passage 103，Air inlet duct 401 arrives the distance radius more than passage 103 of valve 4 centrage.Valve 4 usually rotates to air inlet duct 401 can get at seal casinghousing 1 inside, at this moment air inlet duct 401 is by inside and outside for seal casinghousing 1 connection, gas sensory within seal casinghousing 1 i.e. may detect the gas station of outside, when the electronic machine in seal casinghousing 1 occurs aging, after energising produces spark, internal combustion gas can be burnt, spark detector can sense spark, motor 2 can be controlled at once to work, valve 4 is rotated by motor 2, so that valve 4 is to the outer turn of seal casinghousing 1, in air inlet duct 401 reaches seal casinghousing 1, seal casinghousing 1 is i.e. sealed.Burning in seal casinghousing 1 does not interferes with outside, does not have great accident and occurs, protects staff.Because pottery thread seal performance is not fine, so this device arranges a rubber blanket 102 outside ventilation mouth 101, if rubber blanket 102 not perforate, ventilation mouth 101 is that is blocked, and rubber blanket 102 central part of this device offers a passage 103, valve 4 rotates after being urged to rubber blanket 102, is blocked by passage 103, and the air inlet duct 401 on valve 4 is also blocked by rubber blanket 102, because the radius of passage 103 is less than the distance of air inlet duct 401 to valve 4 center line.After i.e. rubber blanket 102 is fitted with valve 4, valve 4 rotates howsoever, the position the most not connected between air inlet duct 401 with passage 103, has the most i.e. accomplished the sealing of seal casinghousing 1；And when needing ventilation, valve 4 is away from rubber blanket 102, i.e. air enters in seal casinghousing 1 through passage 103, ventilation mouth 101, air channel 401, protective cover 3 successively, defines ventilation.Arranging a protective cover 3 is then to protect motor 2 and valve 4, prevents and internal components bumps against, and arrange spring 5, then be largely ensure that valve 4 presses close to rubber blanket 102 after, do not have the phenomenon of vibrations reversion, further ensure sealing.
Further, above-mentioned seal casinghousing 1 is provided with a handle 6, facilitates staff to carry this device.
Further, above-mentioned valve 4 is provided with a cross recess 7 on the end face outside seal casinghousing 1, and valve 4, by changing cutter, can be rotated by staff, can close valve 4 at ordinary times, is usually overcast and rainy, prevents internal electronics from making moist.
Claims (2)
- null1. one kind is used for combustion gas survey meter stable explosion-proof casing，It is characterized in that，Including a seal casinghousing (1)，Described seal casinghousing (1) uses crystalline ceramics to make，Ventilation mouth (101) it is provided with on described seal casinghousing (1)，Ventilation mouth (101) place is provided with a valve (4)，Valve (4) is also made for pottery，Valve (4) is cylindrical，Valve (4) coordinates with ventilation mouth (101) size，And both are threaded，Valve (4) is rotated by the motor (2) that seal casinghousing (1) is internal，At least one air inlet duct (401) it is provided with on the sidewall of valve (4)，Described air inlet duct (401) bearing of trend is axial consistent with valve (4)，And air inlet duct (401) extends to the other end away from one end of motor (2) from valve (4)，The length of air inlet duct (401) is less than the length of valve (4)，The control end of motor (2) is connected on a spark detector in seal casinghousing (1)，A protective cover (3) it is provided with on the inwall of described seal casinghousing (1)，Motor (2) is positioned at protective cover (3)，The perisporium of protective cover (3) is empty shape in thread，It is provided with a spring (5) between afterbody and the protective cover (3) of motor (2)，Valve (4)、Motor (2)、The center line of spring (5) three overlaps，Described ventilation mouth (101) is fixed with a rubber blanket (102) near seal casinghousing (1) one end outward，The center of rubber blanket (102) is provided with a passage (103)，Air inlet duct (401) arrives the distance radius more than passage (103) of valve (4) centrage.
- One the most according to claim 1 is used for combustion gas survey meter stable explosion-proof casing, it is characterised in that: it is provided with a handle (6) on described seal casinghousing (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410363686.0A CN104121940B (en) | 2014-07-29 | 2014-07-29 | A kind of for combustion gas survey meter stable explosion-proof casing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410363686.0A CN104121940B (en) | 2014-07-29 | 2014-07-29 | A kind of for combustion gas survey meter stable explosion-proof casing |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104121940A CN104121940A (en) | 2014-10-29 |
| CN104121940B true CN104121940B (en) | 2016-08-17 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410363686.0A Expired - Fee Related CN104121940B (en) | 2014-07-29 | 2014-07-29 | A kind of for combustion gas survey meter stable explosion-proof casing |
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| Country | Link |
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| CN (1) | CN104121940B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108154654A (en) * | 2017-12-23 | 2018-06-12 | 中山市得高行知识产权中心（有限合伙） | A kind of gas leakage alarm device based on smart home |
| WO2020108796A1 (en) * | 2018-11-27 | 2020-06-04 | Bobst Bielefeld Gmbh | Printing press |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4882576A (en) * | 1986-11-25 | 1989-11-21 | Monty Boyd | Remote combustible gas sensor |
| JP4022159B2 (en) * | 2003-03-11 | 2007-12-12 | 大阪瓦斯株式会社 | Gas sensor |
| CN201107068Y (en) * | 2007-09-30 | 2008-08-27 | 重庆前卫仪表厂 | Electronic type gas meter for household |
| CN201209700Y (en) * | 2008-06-11 | 2009-03-18 | 倪庆法 | Built-in spiral type explosion-proof dry spring tube valve for gas meter |
| CN102879435A (en) * | 2012-09-28 | 2013-01-16 | 华瑞科学仪器(上海)有限公司 | Small-size explosion-proof sensor for inflammable gas |
| CN204165571U (en) * | 2014-07-29 | 2015-02-18 | 成都国光电子仪表有限责任公司 | Anti-rotation gas detector housing |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102009051072A1 (en) * | 2009-10-28 | 2011-05-05 | Dräger Safety AG & Co. KGaA | Explosion-proof sensor |
-
2014
- 2014-07-29 CN CN201410363686.0A patent/CN104121940B/en not_active Expired - Fee Related
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4882576A (en) * | 1986-11-25 | 1989-11-21 | Monty Boyd | Remote combustible gas sensor |
| JP4022159B2 (en) * | 2003-03-11 | 2007-12-12 | 大阪瓦斯株式会社 | Gas sensor |
| CN201107068Y (en) * | 2007-09-30 | 2008-08-27 | 重庆前卫仪表厂 | Electronic type gas meter for household |
| CN201209700Y (en) * | 2008-06-11 | 2009-03-18 | 倪庆法 | Built-in spiral type explosion-proof dry spring tube valve for gas meter |
| CN102879435A (en) * | 2012-09-28 | 2013-01-16 | 华瑞科学仪器(上海)有限公司 | Small-size explosion-proof sensor for inflammable gas |
| CN204165571U (en) * | 2014-07-29 | 2015-02-18 | 成都国光电子仪表有限责任公司 | Anti-rotation gas detector housing |
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| Publication number | Publication date |
|---|---|
| CN104121940A (en) | 2014-10-29 |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
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| CB03 | Change of inventor or designer information |
Inventor after: Deng Liping Inventor before: Lv Zhonggui |
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| TR01 | Transfer of patent right |
Effective date of registration: 20170512 Address after: 404100 Chongqing Jiulongpo Branch City Road No. 71, No. 71, No. 1 of Erlang students Pioneering Park A Building 5 No. 5-1-5 Patentee after: Chongqing wisdom intellectual property operation management Co.,Ltd. Address before: 610000 Jianshe Road, Sichuan, No. 2, Patentee before: CHENGDU GUOGUANG ELECTRONIC INSTRUMENT Co.,Ltd. |
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| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20181120 Address after: 610000 No. 144 Qingjiang Middle Road, Qingbaijiang District, Chengdu City, Sichuan Province Patentee after: Chengdu Zhirong Zhichuang Intellectual Property Operation Co.,Ltd. Address before: 404100 No. 71, No. 71, Kecheng Road, Kowloon Po, Chongqing, No. 5, No. 5, A building, Erlang international pioneer park, No. 1, Kowloon. Patentee before: Chongqing wisdom intellectual property operation management Co.,Ltd. |
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160817 |